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author | Linus Torvalds | 2007-07-12 23:17:12 +0200 |
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committer | Linus Torvalds | 2007-07-12 23:17:12 +0200 |
commit | 4aabab2181f20560948c2045ce1faaa9ac1507a8 (patch) | |
tree | 6556e126687c9cbb4b4a35a8ad8c327df30ac256 /include/asm-arm/arch-imx/gpio.h | |
parent | Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmo... (diff) | |
parent | Merge branches 'at91', 'davinci', 'imx', 'iop', 'ixp', 'ks8695', 'misc', 'pxa... (diff) | |
download | kernel-qcow2-linux-4aabab2181f20560948c2045ce1faaa9ac1507a8.tar.gz kernel-qcow2-linux-4aabab2181f20560948c2045ce1faaa9ac1507a8.tar.xz kernel-qcow2-linux-4aabab2181f20560948c2045ce1faaa9ac1507a8.zip |
Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm: (50 commits)
[ARM] sa1100: remove boot time RTC initialisation
[ARM] sa1100: stop doing our own rtc management over suspend
[ARM] 4474/1: Do not check the PSR_F_BIT in valid_user_regs
[ARM] 4473/2: Take the HWCAP definitions out of the elf.h file
[ARM] pxa: move platform devices to separate header file
[ARM] pxa: move device registration into CPU-specific file
[ARM] pxa: remove boot time RTC initialisation
[ARM] pxa: stop doing our own rtc management over suspend
[ARM] 4451/1: pxa: make dma.c generic and remove cpu specific dma code
[ARM] 4450/1: pxa: add pxa25x_init_irq() and pxa27x_init_irq()
[ARM] 4440/1: PXA: enable the checking of ICIP2 for IRQs
[ARM] 4438/1: PXA: remove #ifdef .. #endif from pxa_gpio_demux_handler()
[ARM] 4437/1: PXA: move the GPIO IRQ initialization code to pxa_init_irq_gpio()
[ARM] 4436/1: PXA: move low IRQ initialization code to pxa_init_irq_low()
[ARM] 4435/1: PXA: remove PXA_INTERNAL_IRQS
[ARM] 4434/1: PXA: remove PXA_IRQ_SKIP
[ARM] pxa: Fix PXA27x suspend type validation, remove pxa_pm_prepare()
[ARM] pxa: move pm_ops structure into CPU specific files
[ARM] pxa: introduce cpu_is_pxaXXX macros
[ARM] pxa: remove MMC register defines from pxa-regs.h
...
Diffstat (limited to 'include/asm-arm/arch-imx/gpio.h')
-rw-r--r-- | include/asm-arm/arch-imx/gpio.h | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/include/asm-arm/arch-imx/gpio.h b/include/asm-arm/arch-imx/gpio.h new file mode 100644 index 000000000000..486023263f32 --- /dev/null +++ b/include/asm-arm/arch-imx/gpio.h @@ -0,0 +1,102 @@ +#ifndef _IMX_GPIO_H + +#include <asm/arch/imx-regs.h> + +#define IMX_GPIO_ALLOC_MODE_NORMAL 0 +#define IMX_GPIO_ALLOC_MODE_NO_ALLOC 1 +#define IMX_GPIO_ALLOC_MODE_TRY_ALLOC 2 +#define IMX_GPIO_ALLOC_MODE_ALLOC_ONLY 4 +#define IMX_GPIO_ALLOC_MODE_RELEASE 8 + +extern int imx_gpio_request(unsigned gpio, const char *label); + +extern void imx_gpio_free(unsigned gpio); + +extern int imx_gpio_setup_multiple_pins(const int *pin_list, unsigned count, + int alloc_mode, const char *label); + +extern int imx_gpio_direction_input(unsigned gpio); + +extern int imx_gpio_direction_output(unsigned gpio, int value); + +extern void __imx_gpio_set_value(unsigned gpio, int value); + +static inline int imx_gpio_get_value(unsigned gpio) +{ + return SSR(gpio >> GPIO_PORT_SHIFT) & (1 << (gpio & GPIO_PIN_MASK)); +} + +static inline void imx_gpio_set_value_inline(unsigned gpio, int value) +{ + unsigned long flags; + + raw_local_irq_save(flags); + if(value) + DR(gpio >> GPIO_PORT_SHIFT) |= (1 << (gpio & GPIO_PIN_MASK)); + else + DR(gpio >> GPIO_PORT_SHIFT) &= ~(1 << (gpio & GPIO_PIN_MASK)); + raw_local_irq_restore(flags); +} + +static inline void imx_gpio_set_value(unsigned gpio, int value) +{ + if(__builtin_constant_p(gpio)) + imx_gpio_set_value_inline(gpio, value); + else + __imx_gpio_set_value(gpio, value); +} + +extern int imx_gpio_to_irq(unsigned gpio); + +extern int imx_irq_to_gpio(unsigned irq); + +/*-------------------------------------------------------------------------*/ + +/* Wrappers for "new style" GPIO calls. These calls i.MX specific versions + * to allow future extension of GPIO logic. + */ + +static inline int gpio_request(unsigned gpio, const char *label) +{ + return imx_gpio_request(gpio, label); +} + +static inline void gpio_free(unsigned gpio) +{ + imx_gpio_free(gpio); +} + +static inline int gpio_direction_input(unsigned gpio) +{ + return imx_gpio_direction_input(gpio); +} + +static inline int gpio_direction_output(unsigned gpio, int value) +{ + return imx_gpio_direction_output(gpio, value); +} + +static inline int gpio_get_value(unsigned gpio) +{ + return imx_gpio_get_value(gpio); +} + +static inline void gpio_set_value(unsigned gpio, int value) +{ + imx_gpio_set_value(gpio, value); +} + +#include <asm-generic/gpio.h> /* cansleep wrappers */ + +static inline int gpio_to_irq(unsigned gpio) +{ + return imx_gpio_to_irq(gpio); +} + +static inline int irq_to_gpio(unsigned irq) +{ + return imx_irq_to_gpio(irq); +} + + +#endif |